Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Chunjiang Fu0
Dan Dhuyvetter0
Wajira Asanga Ratnayake Manamperi0
Date of Patent
August 9, 2016
Patent Application Number
14160065
Date Filed
January 21, 2014
Patent Primary Examiner
Patent abstract
Water swellable articles are treated with wax by applying a molten wax to the article, the wax having a kinematic viscosity of between about 0.1 cSt to 20 cSt at 100° C., wherein the temperature of the article at the time of applying is about 40° C. to 200° C., with the proviso that the temperature is not less than 30° C. below the melting point of the wax. Using this method of treatment, swelling of the article in water is reduced by at least 25% compared to the same article treated with molten wax wherein the article is at ambient temperature at the time the wax is applied.
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